Dual-sided dry erase boards allow viewing from either side; choose from rectangle, octagon or arrow-shaped signsFeatures black high-density polyethylene with UV inhibitors for indoor and outdoor use.Write with dry-erase markers on the attention-getting shaped surfaces. Simply wipe clean the dry-erase surface and change your message as often as needed.Arrow (part number 4173BL) can be positioned left, right, up or down give or take 45°.Base 18"W can be weighted with sand or water for extra stability.Overall dimensions:4117BL (Rectangle): 64 1/4H x 18W x 18"D; actual sign is 22 1/4H x 13 1/4"W4118BL (Octagon): 61 1/2H x 25 1/2W x 18"D; actual sign is 19 3/8H x 19 3/8"W4173BL (Arrow): 64 1/2H x 25 1/2W x 18"D; actual sign is 12H x 22 1/4"W
